CEDAR: The First All-Sky Airglow Imaging Studies at Geomagnetic Conjugate Sites in Europe and Africa

CEDAR：欧洲和非洲地磁共轭点的首次全天空气辉成像研究

• 批准号: 1552045
• 负责人: Jeffrey Baumgardner
• 金额: $ 48.91万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-10-01 至 2022-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1552045&HistoricalAwards=false
• 关键词: CEDAR; First; Sky; Airglow; Imaging

Proposal Number: AGS - 1552045Principal Investigator: Jeffrey BaumgardnerInstitution: Boston UniversityProposal title: CEDAR: The First All-Sky Airglow Imaging Studies at GeomagneticConjugate Sites in Europe and AfricaABSTRACTThis project will significantly advance an existing collaboration between Boston University, the South African National Space Agency (SANSA), and the University of Padua in Italy to investigate hemispheric asymmetries in upper atmospheric phenomena using a unique configuration of magnetically conjugate all-sky imagers. The SANSA and Padua expertise are essential to the project because instrumentation will be physically located at these two sites. The imagers were previously developed by BU and installed under separate funding. The Padua imager is the first continuously operating all-sky upper-atmospheric imager on the European continent. With its conjugate imager at SANSA, the pair is positioned to shed new light on hemispheric asymmetries at altitudes where the atmosphere transitions into the space environment. The research team, one of the premiere groups in optical aeronomy, proposes to leverage the expertise of the international collaborators and the new type of data set to make important advances in understanding upper atmospheric dynamics. The project will provide an international research experience for a graduate student who will complete a doctoral thesis during the 5-year period of the project. The international collaborations with institutions in Italy and South Africa that will be supported by the project are both compelling and have strategic importance for developing observing capabilities aimed at addressing frontier issues in upper atmosphere - Geospace coupling. In support of this effort, the NSF Office of International Science and Engineering (OISE) is co-funding this project by supporting all requested international travel through the Global Venture Fund.The target phenomena for this primarily observational investigation include: Stable Auroral Red (SAR) arcs, Medium Scale Traveling Ionospheric Disturbances (MSTIDs), ionospheric latitude gradients, and mesospheric waves - all dynamically important signatures of coupling between atmospheric and geospace regions. Exploring the longitudinal and hemispheric differences in these phenomena has the potential for increasing our understanding of the dynamics of the coupled ionosphere-thermosphere-magnetosphere system as it interacts with inputs from space and from the lower atmosphere. The focus on a new longitude sector is important for several reasons. Moving between longitude sectors introduces a changing offset between the geomagnetic coordinate system that organizes space weather inputs and the geographic coordinate system that organizes diurnal and seasonal changes in the atmosphere. In addition, upward propagating disturbances from the lower atmosphere due to weather systems or orography also change with location. Geomagnetic conjugacy has the important effect of selecting locations where the space weather disturbance inputs are similar for a given event but diurnal and seasonal conditions are not. The potential then exists to begin to separate out the effects attributable to the different types of inputs and their interconnections.

提案编号：AGS - 1552045 首席研究员：杰弗里·鲍姆加德纳机构：波士顿大学提案标题：CEDAR：欧洲和非洲地磁共轭站点的首次全天气辉成像研究摘要该项目将显着推进波士顿大学、南非国家航天局 (SANSA) 和意大利帕多瓦大学之间的现有合作 使用磁共轭全天空成像仪的独特配置来研究高层大气现象中的半球不对称性。 SANSA 和帕多瓦的专业知识对该项目至关重要，因为仪器将实际位于这两个地点。这些成像仪之前由 BU 开发并由单独的资金安装。帕多瓦成像仪是欧洲大陆第一台连续运行的全天空高层大气成像仪。 借助 SANSA 的共轭成像仪，该对的定位是为大气过渡到太空环境的高度上的半球不对称性提供新的线索。该研究团队是光学航空学领域的顶尖团队之一，他们建议利用国际合作者的专业知识和新型数据集，在理解高层大气动力学方面取得重要进展。该项目将为将在项目5年期间完成博士论文的研究生提供国际研究经验。该项目将支持与意大利和南非机构的国际合作，这对于发展旨在解决高层大气前沿问题（地球空间耦合）的观测能力具有重要的战略意义。 为了支持这项工作，美国国家科学基金会国际科学与工程办公室 (OISE) 通过全球风险基金支持所有要求的国际旅行，共同资助该项目。这项主要观测调查的目标现象包括：稳定极光红 (SAR) 弧、中等规模移动电离层扰动 (MSTID)、电离层纬度梯度和中层波 - 所有动态重要的耦合特征 大气区域和地球空间区域之间。 探索这些现象的纵向和半球差异有可能增加我们对电离层-热层-磁层耦合系统动力学的理解，因为它与来自太空和低层大气的输入相互作用。出于多种原因，对新经度部门的关注非常重要。在经度扇区之间移动会导致组织空间天气输入的地磁坐标系与组织大气中的昼夜和季节变化的地理坐标系之间的偏移量发生变化。 此外，由于天气系统或地形而从低层大气向上传播的扰动也会随位置而变化。 地磁共轭对于选择空间天气扰动输入对于给定事件相似但昼夜和季节性条件不相似的位置具有重要影响。 然后就有可能开始分离出不同类型的输入及其相互联系所产生的影响。